package com.heima.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdChannelMapper;
import com.heima.common.exception.CustException;
import com.heima.common.exception.CustomException;
import com.heima.model.admin.dtos.ChannelDto;
import com.heima.model.admin.pojos.AdChannel;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.admin.service.AdChannelService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;

import java.util.Date;

@Service
@Slf4j
public class AdChannelImpl extends ServiceImpl<AdChannelMapper, AdChannel> implements AdChannelService {
    @Override
    public ResponseResult findByNameAndPage(ChannelDto dto) {
        //1.检查参数
        if (dto == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //分页参数检查
        dto.checkParam();
        //2.封装查询参数
        Page page = new Page(dto.getPage(), dto.getSize());

        //2.1分页参数
        LambdaQueryWrapper<AdChannel> wrapper =
                Wrappers.lambdaQuery();

        //2.2条件参数
        if (StringUtils.isNotBlank(dto.getName())) {
            wrapper.like(AdChannel::getName, dto.getName());
        }
        // 添加排序
        wrapper.orderByAsc(AdChannel::getOrd);
        //3.执行查询
        IPage result = page(page, wrapper);


        //4.封装响应结果
        PageResponseResult responseResult =
                new PageResponseResult(dto.getPage(), dto.getSize(), result.getTotal());

        return responseResult;
    }

    @Override
    public ResponseResult insert(AdChannel adChannel) {
        //1.参数效验
        if (adChannel == null || StringUtils.isNotBlank(adChannel.getName())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
        }
        //2.频道是否存在
        LambdaQueryWrapper<AdChannel> wrapper =
                Wrappers.lambdaQuery();
        int count = count(wrapper.eq(AdChannel::getName, adChannel.getName()));
        if (count > 0) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST, "该频道已存在");
        }
        //3.执行新增
        adChannel.setCreatedTime(new Date());
        this.save(adChannel);
        // 4 返回结果
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult update(AdChannel adChannel) {
        //1 参数校验
        if (adChannel == null || adChannel.getId() == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2 执行修改
        AdChannel channel = getById(adChannel.getId());
        if (channel == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST, "频道信息不存在");
        }
        //3. 校验名称唯一性
        if (StringUtils.isNotBlank(adChannel.getName())
                &&
                !adChannel.getName().equals(channel.getName())) {
            int count = this.count(Wrappers.<AdChannel>lambdaQuery()
                    .eq(AdChannel::getName, adChannel.getName()));
            if (count > 0) {
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST, "该频道已存在");
            }
        }
        updateById(adChannel);
        //4 返回结果
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult deleteById(Integer id) {

      /*  if (id == 1) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"id不能等于1");
        }*/
        //1.检查参数
        if (id == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2.判断当前频道是否存在 和 是否有效
        AdChannel adChannel = getById(id);
        if (adChannel == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        // 启用状态下不能删除
        if (adChannel.getStatus()) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
        }

        //3.删除频道
        removeById(id);
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

}
